Authorized Distributor of Custom Molded Rubber Parts and O-Rings for over 25 years

Product and Services
O-Rings
Available in Nitrile (Buna N), EPDM, Silicones, Viton, Fluorosilicone, Aflas, Neoprene and Kalrez. Porter Seal stocks a large inventory of standard and metric sizes in all standard materials available for immediate delivery. See sizes on our sizes page.

We also specialize in subminiature and custom sizes. Example: 0.016" ± .002" ID x 0.008" ± .001" CS.

Custom Molded
Porter Seal has the capability to supply a wide variety of custom molded rubber parts made to exact customer specifications. Our moldings can be formed into complex shapes and sizes for any application. Subminiature and close tolerances is our specialty.
Sheet Rubber
Neoprene, Nitrile (Buna N), Silicone, EPDM, Viton, Red Rubber, Open and Closed Cell Neoprene Sponge, Silicone Sponge, Neoprene Cotton and Nylon inserted. Sold by the linear foot in 36" and 48" wide rolls. Ask your salesperson about full roll discounts.
Extrusions
Standard and custom extrusions to meet any requirement.
O-Ring Cord
American standard and metric sizes in Nitrile (Buna N), Viton, Silicone, Ethylene Propylene, Neoprene, Aflas, and Closed Cell Sponge. Sold by the foot or by the roll.
O-Ring Kits
Buna-N, Viton, Silicone, E.P.R., and Neoprene. Available in American Standard and Metric sizes.
Spliced O-Rings
Any size, any Quantity, any Material.